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Girgaon, Mumbai - 400004
Stainless Steel 904L Welded Pipes Manufacturer in India
Stainless Steel 904L Welded Pipe Manufacturer & Stockist in India
When process piping is exposed to highly aggressive acids, chlorides and severe corrosive environments, selecting the right material is essential for ensuring long-term plant reliability. Kamal Steels manufactures and stocks Stainless Steel 904L Welded Pipes engineered for critical industrial applications where conventional stainless steel grades may not provide adequate corrosion resistance. Manufactured in accordance with ASTM A312 and ASME SA312 standards using Stainless Steel 904L (UNS N08904 / WNR 1.4539), our welded pipes deliver exceptional resistance to pitting, crevice corrosion, stress corrosion cracking and reducing acids, making them a dependable choice for highly demanding service conditions.
Unlike standard austenitic stainless steels, SS 904L contains higher levels of nickel, molybdenum and copper, enabling it to perform exceptionally well in sulphuric acid, phosphoric acid and chloride-rich environments. These characteristics make Stainless Steel 904L Welded Pipes widely used in chemical processing plants, fertilizer manufacturing, offshore and marine installations, desalination facilities, pharmaceutical industries, pulp & paper mills, heat exchangers and petrochemical processing units where superior corrosion resistance directly contributes to longer service life and reduced maintenance costs.
Every Stainless Steel 904L Welded Pipe manufactured by Kamal Steels is produced from certified raw materials and undergoes comprehensive quality inspections, including weld integrity verification, dimensional inspection, hydrostatic testing and complete material traceability. Backed by extensive ready stock, project-specific manufacturing capabilities and prompt delivery, we supply reliable welded piping solutions that meet the demanding requirements of industrial projects across India and international markets.
Stainless Steel 904L Welded Pipe Specifications
| Product | Stainless Steel 904L Welded Pipe |
|---|---|
| Material Grade | 904L (UNS N08904 / WNR 1.4539) |
| Standards | ASTM A312 / ASME SA312 |
| Outside Diameter | 1/8" NB to 24" NB (6 mm to 610 mm) |
| Wall Thickness | SCH 5S to SCH XXS |
| Pipe Type | Welded, ERW, EFW & Fabricated |
| Length | Single Random, Double Random & Custom Cut Length |
| End Type | Plain End, Beveled End & Threaded |
| Surface Finish | Annealed & Pickled (AP), Bright Annealed (BA), 2B, No.1 & Polished |
| Inspection | Hydro Test, PMI, Radiography, Eddy Current Test & EN 10204 3.1 MTC |
Features & Benefits of Stainless Steel 904L Welded Pipes
Applications of Stainless Steel 904L Welded Pipes
Because of their excellent corrosion resistance and durability, Stainless Steel 904L Welded Pipes are widely used in industries handling aggressive chemicals and seawater environments.
Stainless Steel 904L Welded Pipe Manufacturer & Stockist in India
Kamal Steels manufactures and supplies premium-quality Stainless Steel 904L Welded Pipes for industries operating in highly corrosive environments. Produced in accordance with ASTM A312 and ASME SA312 standards, our welded pipes are designed to deliver exceptional resistance against reducing acids, chlorides, pitting, and crevice corrosion. They are widely used where conventional stainless steel grades cannot provide sufficient corrosion protection.
Manufactured from high-alloy Stainless Steel 904L (UNS N08904 / WNR 1.4539), our welded pipes combine high nickel, chromium, molybdenum, and copper content to provide outstanding corrosion resistance, excellent weldability, and long service life. Kamal Steels maintains ready stock in various sizes, schedules, and wall thicknesses to support the requirements of chemical processing, fertilizer plants, offshore installations, pharmaceutical industries, desalination plants, and marine engineering applications.
Stainless Steel 904L Welded Pipe Specifications
| Product | Stainless Steel 904L Welded Pipe |
|---|---|
| Material Grade | 904L (UNS N08904 / WNR 1.4539) |
| Standards | ASTM A312 / ASME SA312 |
| Outside Diameter | 1/8" NB to 24" NB (6 mm to 610 mm) |
| Wall Thickness | SCH 5S to SCH XXS |
| Pipe Type | Welded, ERW, EFW & Fabricated |
| Length | Single Random, Double Random & Custom Cut Length |
| End Type | Plain End, Beveled End & Threaded |
| Surface Finish | Annealed & Pickled (AP), Bright Annealed (BA), 2B, No.1 & Polished |
| Inspection | Hydro Test, PMI, Radiography, Eddy Current Test & EN 10204 3.1 MTC |
Features & Benefits of Stainless Steel 904L Welded Pipes
Applications of Stainless Steel 904L Welded Pipes
Because of their excellent corrosion resistance and durability, Stainless Steel 904L Welded Pipes are widely used in industries handling aggressive chemicals and seawater environments.
Stainless Steel 904L Welded Pipe Chemical Composition
Stainless Steel 904L is a high-alloy austenitic stainless steel containing elevated levels of nickel, molybdenum, chromium, and copper. This carefully balanced composition provides exceptional resistance to reducing acids, chlorides, pitting, and crevice corrosion, making it suitable for highly aggressive industrial environments.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.02 Max |
| Silicon (Si) | 1.00 Max |
| Manganese (Mn) | 2.00 Max |
| Phosphorus (P) | 0.045 Max |
| Sulfur (S) | 0.035 Max |
| Chromium (Cr) | 19.00 – 23.00 |
| Nickel (Ni) | 23.00 – 28.00 |
| Molybdenum (Mo) | 4.00 – 5.00 |
| Copper (Cu) | 1.00 – 2.00 |
| Iron (Fe) | Balance |
Mechanical Properties of Stainless Steel 904L Welded Pipe
Stainless Steel 904L Welded Pipes offer excellent mechanical strength while maintaining superior corrosion resistance. These properties make them suitable for pressure piping systems and severe chemical processing applications.
| Property | Value |
|---|---|
| Tensile Strength | 490 MPa Minimum |
| Yield Strength (0.2% Offset) | 220 MPa Minimum |
| Elongation | 35% Minimum |
| Hardness | 70 HRB Maximum |
| Density | 8.0 g/cm³ |
| Melting Range | 1300 – 1390°C |
Equivalent Grades of Stainless Steel 904L Welded Pipe
| Standard | Grade |
|---|---|
| ASTM / ASME | 904L |
| UNS | N08904 |
| Werkstoff No. | 1.4539 |
| EN | X1NiCrMoCu25-20-5 |
| AFNOR | Z2 NCDU 25-20 |
| JIS | SUS 904L |
Why Choose Kamal Steels?
Kamal Steels supplies premium-quality Stainless Steel 904L Welded Pipes manufactured from certified raw materials using advanced production techniques. Every pipe is inspected for dimensional accuracy, corrosion resistance, and mechanical performance before dispatch. With ready stock, customized manufacturing options, competitive pricing, prompt delivery schedules, and complete inspection documentation, we provide dependable piping solutions for industrial projects across India and international markets.
Frequently Asked Questions
Stainless Steel 904L Welded Pipes are high-alloy austenitic stainless steel pipes designed for highly corrosive environments. They offer outstanding resistance to acids, chlorides, pitting, and crevice corrosion.
SS 904L contains higher levels of nickel, molybdenum, chromium, and copper, providing significantly better corrosion resistance than conventional stainless steel grades such as 304 and 316.
These pipes are manufactured according to ASTM A312, ASME SA312, ASTM A358, ASTM A778, ASME B36.19M, and related international standards.
Stainless Steel 904L Welded Pipes are available from 1/8" NB to 24" NB with multiple schedules, wall thicknesses, and customized lengths.
They are widely used in chemical processing plants, desalination systems, offshore platforms, pharmaceutical facilities, fertilizer plants, marine applications, and acid handling equipment.
Yes. Their high alloy composition provides excellent resistance to chloride-rich and seawater environments, making them suitable for marine and offshore applications.
Every pipe undergoes hydrostatic testing, PMI, radiographic testing, eddy current testing, dimensional inspection, and visual examination before dispatch.
Yes. Stainless Steel 904L Welded Pipes are supplied with EN 10204 3.1 Mill Test Certificates, with third-party inspection available upon request.
Yes. We manufacture and supply welded pipes in customized diameters, wall thicknesses, lengths, end finishes, and surface finishes based on project specifications.
Kamal Steels offers premium-quality Stainless Steel 904L Welded Pipes with certified materials, stringent quality control, ready inventory, competitive pricing, timely delivery, and reliable customer support for domestic and international projects.